Feature-based tool path generation approach for incremental sheet forming process

Lü, Bin; Chen, J.; Ou, Hengan; Cao, Jian

doi:10.1016/j.jmatprotec.2013.01.023

Cited by 120 publications

(66 citation statements)

References 11 publications

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“…It was found that the tool path correction algorithm with Fourier and wavelet transforms was reasonable. Lu et al [78] presented a new feature-based tool path generation algorithm for ISF technology. Better geometric accuracy can be obtained by using this feature-based algorithm, especially for the cases of non-symmetrical parts without a supporting die.…”

Section: Tool Pathmentioning

confidence: 99%

Review on the influence of process parameters in incremental sheet forming

Gatea

McCartney

2016

Int J Adv Manuf Technol

161

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Incremental sheet forming (ISF) is a relatively new flexible forming process. ISF has excellent adaptability to conventional milling machines and requires minimum use of complex tooling, dies and forming press, which makes the process cost-effective and easy to automate for various applications. In the past two decades, extensive research on ISF has resulted in significant advances being made in fundamental understanding and development of new processing and tooling solutions. However, ISF has yet to be fully implemented to mainstream high-value manufacturing industries due to a number of technical challenges, all of which are directly related to ISF process parameters. This paper aims to provide a detailed review of the current state-of-the-art of ISF processes in terms of its technological capabilities and specific limitations with discussions on the ISF process parameters and their effects on ISF processes. Particular attention is given to the ISF process parameters on the formability, deformation and failure mechanics, springback and accuracy and surface roughness. This leads to a number of recommendations that are considered essential for future research effort.

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Section: Tool Pathmentioning

confidence: 99%

Review on the influence of process parameters in incremental sheet forming

Gatea

McCartney

2016

Int J Adv Manuf Technol

161

View full text Add to dashboard Cite

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“…Recently, many studies concentrated on the toolpath correction/optimisation. The ISF toolpath can be corrected by using error compensation based on trial fabrications [11], a feature-based toolpath generation strategy [12], a Multivariate Adaptive Regression splines (MARS) correction strategy [13], iterative algorithms based on a transfer function [14], and an artificial cognitive system [15]. Moreover, some in-process toolpath correction approaches were performed in SPIF based on a control strategy using spatial impulse responses of the process [16] and a MPC strategy [17].…”

Section: Introductionmentioning

confidence: 99%

Part accuracy improvement in two point incremental forming with a partial die using a model predictive control algorithm

Kearney

Wang

et al. 2017

Precision Engineering

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.Part accuracy improvement in two point incremental forming with a partial die using a model predictive control algorithm.Precision Engineering http://dx.doi.org/10. 1016/j.precisioneng.2017.02.006 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Research highlights: Flexible forming technologies are becoming increasingly significant with the rise of small batch and customised production in the market. work. The enhanced control algorithm is able to correct the toolpath in both the vertical and horizontal directions. In the newly-added horizontal control module, intensive profile points in the evenly distributed radial directions of the horizontal section were used to estimate the horizontal error distribution along the horizontal sectional profile during the forming process. The toolpath correction was performed through properly adjusting the toolpath in two directions based on the optimised toolpath parameters at each step. A case study for forming a non-axisymmetric shape was conducted to experimentally validate the developed toolpath correction strategy. Experiment results indicate that the two-directional toolpath correction approach contributes to part accuracy improvement in TPIF compared with the typical TPIF process that is without toolpath correction.

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“…Approaches to improve the accuracy have included toolpath optimization techniques [15][16][17][18], use of in-process heating techniques such as laser support or electric heating to soften the material and thereby reduce spring back and plastic deformation [19,20], feature analysis based techniques [21,22], use of tooling strategies [23] etc. Limited improvement in accuracy of titanium sheet parts was demonstrated for a TPIF process using laser support by Göttmann et al [24] and for SPIF by compensating part geometry by Behera et al [25].…”

Section: Introductionmentioning

confidence: 99%

Effect of stress relieving heat treatment on surface topography and dimensional accuracy of incrementally formed grade 1 titanium sheet parts

Behera

2016

Int J Adv Manuf Technol

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The forming of parts with an optimized surface roughness and high dimensional accuracy is important in many applications of incremental sheet forming (ISF). To realize this, the effect of stress relieving heat treatment of grade-1 Ti parts performed before and after forming on the surface finish and dimensional accuracy was studied. It was found that heat treatment at a temperature of 540°C for 2 h improves the surface finish of formed parts resulting in a surface with little or no visible tool marks. Additionally, it improves the dimensional accuracy of parts after unclamping from the rig used for forming, in particular, that of parts with shallow wall angles (typically <25°). It was also noted that post-forming heat treatment improves the surface finish of parts. The surface topography of formed parts was studied using interferometry to yield areal surface roughness parameters and subsequently using secondary electron imaging. Back-scatter electron microscopy imaging results coupled with energy-dispersive Xray (EDX) analysis showed that heat treatment prior to forming leads to tool wear as indicated by the presence of Fe in samples. Furthermore, post-forming heat treatment prevents curling up of formed parts due to compressive stresses if the formed part is trimmed.

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Feature-based tool path generation approach for incremental sheet forming process

Cited by 120 publications

References 11 publications

Review on the influence of process parameters in incremental sheet forming

Review on the influence of process parameters in incremental sheet forming

Part accuracy improvement in two point incremental forming with a partial die using a model predictive control algorithm

Effect of stress relieving heat treatment on surface topography and dimensional accuracy of incrementally formed grade 1 titanium sheet parts

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